Nut-lock.



A. KESBERGER.

U'JI, LOCK.

APPLICATION FILED APB.9,191(L Patented Oct. 25, 1910.

NM-m an a Y washer 6 provided 'body of. the washer so that they may ALBEBT KESBERGEB,- 0F BUBDETTE, SOUTH DAKOTA.

NUTLOCK.

Specification 0: Letters Patent.

Patented Oct. 25, 1910.

Application filed April 9,1910. Serial No. 554,544.

To all whom it may concern:

- Be it known that I, ALBERT Knsanaonn, a citizen of the United States of America, residin at Burdette, in the county of Hand and gtate of South Dakota, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to nut and bolt locks and the principal object of the same is to provide a Washer that is adapted to have a ositive engagement with a nut, with a ho t, and with the work held by the nut and bolt, thereby preventing relative movement of said bolt and nut.

In carrying out the objects of the invention generally stated above it. will be understood, of course, that the essential features thereof are necessarily susceptible of changes in details and structural arrangements, one preferred and practical embodiment of which is shown in theaccompanying drawin s, wherein i ure 1 is a detail perspective view showing .t e practical application ofthe invention. Fig. 2 is a front view of a nut. and bolt locked together by the improved washer. Fig. 3 is a sectional view taken on the line 3-3, Fig. 1. Fig. 4 is a detail view in front elevation of the washer.

Referring to said drawings by numerals, 1-2 designates the work through which the bolt 3 projects, said bolt having its threaded portion provided with a longitudinal groove 4.

5 designates the nut for the bolt. A with a central bolt-receiving opening 7 is fitted over said bolt and interposed between the nut 5 and the work. Washer 6 is provided with a lug 8 that projects into o ening 7 and enters the groove 4 of bolt 3. gaid Washer is larger indiameter than the width of the nut. 5 and at opposite portions of its periphery is provided with slots 9-10, which forms a pair of oppositely disposed pointed penetrating spurs 11-12 which are bent at right angles to till: forced into the work when the nut 5 is tight- I ened thereon. A third slot 13 is formed in.

said washer, said slotextending from the periphery of the washer toward the center thereof and being longer than slots 9-10 and projectin in a direction-at right angles thereto. Sai slot 13 partially detaches a portion from the washer which is bent outward relative to said washer and in a direction opposite to the spurs 11-12 to provide a nut-enga 'ng lip 14.

As wil be observed by reference to Figs. 1 and 3, the lu 8 engages the groove 4 of bolt3 so that re ative movement of said bolt and washer is revented, and that when the spurs 11-12 0? washer 6 are forced into the work by nut 4, the Washer is locked to the work, after which lip 14 is bent away from the washer so that it willengage one flat side of the nut, thereby preventing reverse movement of the nut.

As is clearly shown in Fig. 1, the locking lip 14: may be reduced in thickness by cuttin awa Y as at 14" its undersurf ace. This provides means whereby a space will be left between said lip .and the work when said lip is flattened so that a prying tool may be inserted beneath said lip to force the same to locking engagement with the nut.

What I claim as my invention is 1. A nut and bolt lock comprising a washer provided with oppositely disposed parallel inwardly projecting slots which form pointed work-engagin spurs and with an inwardly projecting 5 ct arranged at right angles to the first mentioned slots and forming a nut engaging lip, said Washer also provided with bo t-enga in means. I

2. A and bolt comprising a nut 0c washer provided with work-engaging means,

bolt engaging means, and a nut engaging lip, said lip having its under surface cut away to ermit a prying tool to beinserted beneath t e same.

In testimony whereof I hereunto ailix my signature in presence of two witnesses.

ALBERT KESBERGER.

\Vitnesses A. W. HOPKINS, J. M. ALLEN. 

